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Add reverse sorting for primitives

See original GitHub issue

It’s not actually easy to sort an int[] in reverse in Java. The typical ways you’d sort an array in reverse don’t work on primitives:

 Arrays.sort(array, Collections.reverseOrder()); // no comparators for primitives

 Collections.reverse(Arrays.asList(array)); // view array as a List and reverse it, but Arrays.asList doesn't work for int[]

The shortest way I can think of is


…which boxes every element in the array.

Perhaps we should consider e.g. Ints.reverseSort or the like.

Issue Analytics

  • State:closed
  • Created 6 years ago
  • Reactions:4
  • Comments:5 (3 by maintainers)

github_iconTop GitHub Comments

Maaartinuscommented, Sep 7, 2017

@lowasser Maybe there should be Ints.reverse(int[])? Then a two step solution would be fast.

JakeWhartoncommented, Sep 8, 2017

That’s what the classpath exemption is for.

On Fri, Sep 8, 2017 at 3:52 PM Jonathan Bluett-Duncan <> wrote:

Edit: On the other hand, that is quite a bit of baggage to add, might as well use

@thekeenant On the other hand, that library looks like it’s licensed under the GPLv2 + Class Exception, which doesn’t sound great to me for projects except GPL-licensed ones.

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